function SetFocus(TargetFormName) {
  var target = 0;
  if (TargetFormName != "") {
    for (i=0; i<document.forms.length; i++) {
      if (document.forms[i].name == TargetFormName) {
        target = i;
        break;
      }
    }
  }

  var TargetForm = document.forms[target];
    
  for (i=0; i<TargetForm.length; i++) {
    if ( (TargetForm.elements[i].type != "image") && (TargetForm.elements[i].type != "hidden") && (TargetForm.elements[i].type != "reset") && (TargetForm.elements[i].type != "submit") ) {
      TargetForm.elements[i].focus();

      if ( (TargetForm.elements[i].type == "text") || (TargetForm.elements[i].type == "password") ) {
        TargetForm.elements[i].select();
      }

      break;
    }
  }
}

function RemoveFormatString(TargetElement, FormatString) {
  if (TargetElement.value == FormatString) {
    TargetElement.value = "";
  }

  TargetElement.select();
}

function CheckDateRange(from, to) {
  if (Date.parse(from.value) <= Date.parse(to.value)) {
    return true;
  } else {
    return false;
  }
}

function IsValidDate(DateToCheck, FormatString) {
  var strDateToCheck;
  var strDateToCheckArray;
  var strFormatArray;
  var strFormatString;
  var strDay;
  var strMonth;
  var strYear;
  var intday;
  var intMonth;
  var intYear;
  var intDateSeparatorIdx = -1;
  var intFormatSeparatorIdx = -1;
  var strSeparatorArray = new Array("-"," ","/",".");
  var strMonthArray = new Array("jan","feb","mar","apr","may","jun","jul","aug","sep","oct","nov","dec");
  var intDaysArray = new Array(31, 28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);

  strDateToCheck = DateToCheck.toLowerCase();
  strFormatString = FormatString.toLowerCase();
  
  if (strDateToCheck.length != strFormatString.length) {
    return false;
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strFormatString.indexOf(strSeparatorArray[i]) != -1) {
      intFormatSeparatorIdx = i;
      break;
    }
  }

  for (i=0; i<strSeparatorArray.length; i++) {
    if (strDateToCheck.indexOf(strSeparatorArray[i]) != -1) {
      intDateSeparatorIdx = i;
      break;
    }
  }

  if (intDateSeparatorIdx != intFormatSeparatorIdx) {
    return false;
  }

  if (intDateSeparatorIdx != -1) {
    strFormatArray = strFormatString.split(strSeparatorArray[intFormatSeparatorIdx]);
    if (strFormatArray.length != 3) {
      return false;
    }

    strDateToCheckArray = strDateToCheck.split(strSeparatorArray[intDateSeparatorIdx]);
    if (strDateToCheckArray.length != 3) {
      return false;
    }

    for (i=0; i<strFormatArray.length; i++) {
      if (strFormatArray[i] == 'mm' || strFormatArray[i] == 'mmm') {
        strMonth = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'dd') {
        strDay = strDateToCheckArray[i];
      }

      if (strFormatArray[i] == 'yyyy') {
        strYear = strDateToCheckArray[i];
      }
    }
  } else {
    if (FormatString.length > 7) {
      if (strFormatString.indexOf('mmm') == -1) {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mm'), 2);
      } else {
        strMonth = strDateToCheck.substring(strFormatString.indexOf('mmm'), 3);
      }

      strDay = strDateToCheck.substring(strFormatString.indexOf('dd'), 2);
      strYear = strDateToCheck.substring(strFormatString.indexOf('yyyy'), 2);
    } else {
      return false;
    }
  }

  if (strYear.length != 4) {
    return false;
  }

  intday = parseInt(strDay, 10);
  if (isNaN(intday)) {
    return false;
  }
  if (intday < 1) {
    return false;
  }

  intMonth = parseInt(strMonth, 10);
  if (isNaN(intMonth)) {
    for (i=0; i<strMonthArray.length; i++) {
      if (strMonth == strMonthArray[i]) {
        intMonth = i+1;
        break;
      }
    }
    if (isNaN(intMonth)) {
      return false;
    }
  }
  if (intMonth > 12 || intMonth < 1) {
    return false;
  }

  intYear = parseInt(strYear, 10);
  if (isNaN(intYear)) {
    return false;
  }
  if (IsLeapYear(intYear) == true) {
    intDaysArray[1] = 29;
  }

  if (intday > intDaysArray[intMonth - 1]) {
    return false;
  }
  
  return true;
}

function IsLeapYear(intYear) {
  if (intYear % 100 == 0) {
    if (intYear % 400 == 0) {
      return true;
    }
  } else {
    if ((intYear % 4) == 0) {
      return true;
    }
  }

  return false;
}

function close_div_okno() {
document.getElementById('pop_window').innerHTML = '';
document.getElementById('pop_overlay').style.display = 'none';
document.getElementById('blad').style.display = 'none';
document.getElementById('ekran').style.display = 'none';
hidden_flash('pokaz');
}

function okno(tekst) {
hidden_flash('ukryj');
document.getElementById('blad').style.display='block';
document.getElementById('pop_overlay').style.display = 'block';
document.getElementById('ekran').style.display = 'block';	
document.getElementById('ekran').innerHTML = unescape("<div id='pop_window' style='display:block;position:absolute; top:210px; left:50%; margin-left:-175px; font-size:20px; z-index:9999;'>"+
   "<table style='background-color:#ffffff;border:1px solid #000000;' width='350px' cellpadding='5' cellspacing='0'><tr><td style='background-color: #333344;border-bottom: 2px solid #000000;border-top: 1px solid #78A3F2;border-left: 1px solid #78A3F2;border-right: 1px solid #204095;' align='center'>"+
   "<table width='98%' border='0' cellpadding='0' cellspacing='0'><tr><td width='50%' align='left' style='font: bold 13px tahoma,arial, sans-serif; color:#ffffff'>UWAGA<%2Ftd><td width='50%' align='right'>"+
   "<img src='popupbox/close.gif' border='0' style='cursor:pointer' onclick='javascript:close_div_okno()'><%2Ftd><%2Ftr><%2Ftable><%2Ftd><%2Ftr><tr><td>"+				
   "<center><p style='font: bold 17px tahoma,arial, sans-serif; color:#FF0000'>Komunikat<%2Fp><%2Fcenter>"+				
   "<center><p style='font: normal 11px tahoma,arial, sans-serif; color:#616161'>"+tekst+"<%2Fp><%2Fcenter><br>&nbsp;"+			
   "<input type='button' value='Zamknij' onclick='javascript:close_div_okno();'>"+
   "<%2Ftd><%2Ftr><%2Ftable><%2Fdiv>");
}

function hidden_flash(state) {
var objects = document.getElementsByTagName("object");
for (var i = 0; i < objects.length; i++) {
	objects[i].style.visibility = (state == "ukryj") ? 'hidden' : 'visible';
}
var embeds = document.getElementsByTagName("embed");
for (var i = 0; i < embeds.length; i++) {
	embeds[i].style.visibility = (state == "ukryj") ? 'hidden' : 'visible';
}
}